620377745 has 8 divisors (see below), whose sum is σ = 801719016. Its totient is φ = 458125056.

The previous prime is 620377733. The next prime is 620377763. The reversal of 620377745 is 547773026.

620377745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25847056 + 594530689 = 5084^2 + 24383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 620377745 - 2⁴ = 620377729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4772072 + ... + 4772201.

It is an arithmetic number, because the mean of its divisors is an integer number (100214877).

Almost surely, 2^620377745 is an apocalyptic number.

620377745 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

620377745 is a deficient number, since it is larger than the sum of its proper divisors (181341271).

620377745 is a wasteful number, since it uses less digits than its factorization.

620377745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9544291.

The product of its (nonzero) digits is 246960, while the sum is 41.

The square root of 620377745 is about 24907.3833430973. The cubic root of 620377745 is about 852.8750372986.

The spelling of 620377745 in words is "six hundred twenty million, three hundred seventy-seven thousand, seven hundred forty-five".